Back when the AMD Phenom II X4 840 CPU was launched at the beginning of the year, many hardware reviews were quick to point that the processors was actually based on the Propus core and not on Daneb, as its name would lead us to believe, AMD doing this one more for the Phenom II X2 511 CPU that is actually just a renamed Athlon II.
The main difference between the cores used in the Phenom II and Athlon II processors is that the latter drop the L3 cache
that is specific to the Phenom line.
However, this seems to not be the case anymore, as the Phenom II X2 511, just like the Phenom II X4 840, is actually an Athlon II part that has no L3 cache whatsoever.
This came to light after the CPU-World
website found inside a few systems during the 2011 Consumer Electronics Show a previously unheard of CPU, called the Phenom II X2 511.
Although not so many details were available at that time, further investigations found that the CPU is actually based on AMD's
Regor core that is used inside the company's dual-core Athlon II processors.
Another confirmation of this fact was found on a Chinese auction website where a few of those CPUs are listed under the hybrid HDX511OCK23GM part number as the "HD" prefix belongs to Phenom II line, while the "OCK23GM" suffix is common for Athlon II X2 CPUs.
In addition, CPU-Z reports that the Phenom II X2 511 is clocked at 3.4GHz, packs 2MB of L2 cache, and no L3 cache memory, all of these leading CPU-World to believe the 511 “is just an Athlon II X2 270 CPU
, re-branded for OEM market.”
The Phenom II X2 511 is available in HP's Pavilion Slimline s5700 line of PCs as well as an option in the HP Pavilion p6750z and Slimline s5750z customizable PCs.